class_docstr: Black amplitude contour waveform.
      
class_docstr_tok: ["Black","amplitude","contour","waveform","."]
code: def version():
      return "1.0"
  
file_path: TimeSide/timeside/plugins/grapher/waveform_contour.py
imports: from timeside.core import implements, interfacedoc
  from timeside.core.api import IGrapher
  from .waveform_simple import Waveform
  from .utils import peaks
  import numpy
label_desc: Use image node_id 4 for calling the WaveformContourBlack obj's underlying member method code with example usage: obj.version() and returns: str